Suction-pipe for pumps



I (No Model.) F. BETTS.

SUGTION PIPE FOR PUMPS.

Patented Feb. 12, 1895.

UNITED STATES I PATENT OFFI E.

FREDERICK BETTS, OF BROOKLYN,NEW YORK. v

SUCTION-PIPE FOR PUMPS.

SPECIFICATION forming part of Letters Patent No. 534,191, dated February12, 1895.

' Application filed February 17, 1894. Serial No. 500,590. (No model.)

.To aZZ whom it may concern.-

Be it known that I, FREDERICK Burrs, a citizen of the United ,States,residing in the city of Brooklyn, in the county of Kings and State ofNew York, have invented a certain new and useful Improvement in Suction-Pipes for Pumps, of which the following is a I the upper portion ofspecification.

My improvement provides a large foraminous area at the base, obtainingthe effect of a Vacuum chamber by a space provided in the well betweenan inher and an outer tube, which inner tube serves as the eductionpassage through which the water is raised, While the outer tube forms 'asmooth and continuous casing, properly shod and equipped, for beingforced down into the earth.

I equip the device with a valve for stopping the inner pipe tightly whendesired, and provide what I term a sand-pipe for drawing strongly fromthe bottom of the interior of the outer tube by simply closing the mainstop valveand openinga cock in such sandpipe, and working the pump withthe'valves thus adjusted. I provide a by-pass valve and a controllingcock therefonwhich enables me to increase or reduce the air in thevacuum chamber at will.

The accompanying drawings form a part of this specification.

Figure 1 is a side elevation showing the entire apparatus, and Fig. 2 isa central vertical section through certain portions.

It will be understood that the several joints and other parts notspecifically described,-

ordinary and suitable conboth, are perforated to admit the water, andthe tube is sunk below the line of complete.

saturation, or what is ordinarily termed the water line in the earth. v

B is the inner tube, mounted a little out of center within the tube A,and extending downward a part of the distance therein with the lower endopen to receive'the water.

D is what I term a sand-pipe, extending down through the reducer. V

O is a cap, performing the functions of a reducer, and fitted tightlyand strongly to the top of the outer tube A and to the exterior of theinner tube B, and terminating near the bottom of the interior of theapparatus.

On'the top of the inner pipe B is a casing E, which incloses aself-acting valve, which may be a clapper-Valve of any ordinaryconstruction, adapted to allowthe' water a free passage upward andforbid its return. Above this is a globe valve G, of anyordinary or suitable construction, adapted to completely arrest the flow of the water ineither direction, when required.

H is an extension of the pipe farther upable pattern, represented as areciprocating, single-acting hand-pump. p

The pump may deliver the water in the approximately intermittent mannercommon to this class of pumps, while the induction from the porous earthat the bottom of the apparatus is less intermittent. This end isattained by partially exhausting the air under the cap in the spacemarked a, between the inner pipe B and the upper portion of the Outerpipe A. In case there should be too little or too much air at thispoint, I provide for avoiding the difficulty by a by-pass M,

which may be much smaller than the delivery pipe, and is provided with asmall cock M, which is ordinarily closed during the time while the pumpis working.

Whenever the working of the apparatus indicates a surplus of air, or forany reason it is desired to reduce the quantity of air which remainsunder the cap 0, 'the cock M may be opened momentarily while the pump isworking, and any desired quantity of the air may flow up through thepipe Mand pass away through the pump. When, on the con- .trary, theharsh and inelastic action of'the pump, or any other indication makes itapparent that there is too little air under the cap, the pump isstopped, and the cock M being opened the water is allowed to flowdownward through it, and when the upper -ward, and I is a pump of anyordinary or suitend of the pipe M is uncovered, air will desoend throughthe pipe M. When a sufficient quantity has descended and is ready to perform its useful function in the space a, the cock M is closed, and theaction of the pump may be resumed in the ordinary manner.

lhe sand-pipe D is inserted tightly through the cap 0, and presents itsopen lower end in the interior of the apparatus near the bot tom, readyto draw out any sand which may accumulate therein.

D is a cock, which is ordinarily closed, but whenever it is suspectedthat there is an inj urious accumulation of sand, this cock is openedand the pump being worked with the globe-valve G closed, the strongcurrent of water upward through the sand-pipe will draw the sand withit. I have shown this pipe as connected to the by-pass pipe M, andprefer such construction; but it may be carried up independently, ifdesired.

In starting the apparatus, the globe-valve G is closed, and the cock Mis opened. Now the pump being well wetted and worked vigorously, the airwill be drawn out through the pipe M and the water will rise. When thishas proceeded sufiiciently, the cock M is closed, and the globe-valve Gcautiously opened. On further working the pump the water will now bedrawn up through the inner tube B, and the smaller quantity of airremaining in the space acauses that space to serve as a vacuum chamber,the water-level therein rising and lowering with each motion of thepump, and maintaining a substantially uniform vacuum in the well, anddrawing the water nearly uniformily inward through the foraminoussurface at the bottom.

The self-acting valve E serves as a checkvalve, preventing the return ofthe water and holding the apparatus always ready for immediate use.

Modifications may be made without departing from the principle orsacrificing the advantages of the invention.

I can set the inner pipe B centrally within the outer pipe A, and incase the sand-pipe D is dispensed with I prefer to do so.

I claim as my invention-- 1. In a driven well, the large tube A, havingits lower end properly conditioned for driving into the earth, andreceiving water therefrom, in combination with the smaller tube B,extending down a part of its length within it, and with the pump I, capor reducer G joining these parts tightly and strongly, the valve G andby-pass pipe M and cook M, all arranged for joint operationsubstantially as herein specified.

2. In a driven well, the outer pipe A, prop- 6o erly shod for beingdriven down in the earth and receiving water at or near the lower end,the smaller pipe B extending partially down in its interior, cap 0tightly joining these parts, the pump 1, and globe-valve G, incombination with each other and with the sandpipe D communicatingbetween the bottom of the apparatus and the space above said valve G,and controlling cook or valve D in said pipe, all arranged for jointoperation substantially as herein specified.

In testimony that I claim the invention above set forth I affix mysignature in presence of two witnesses.

FREDERICK BETTS.

\Vitnesses:

HENRY B. STRYKER, OWEN MCQUAID.

